Face-Centered Central Composite Design for the Optimization of the Extraction of Phenolic Compounds from Kernels and Shells of Raphia farinifera and Evaluation of the Antioxidant, Antimicrobial, and Anti-Inflammatory Activities

Table 4

Analysis of variance for the models of total polyphenol content extract from shell and kernel of Raphia farinifera.

Factors		Kernel extract	Shell extract
		value	value
Linear term	: time	0.7677	0.7072
	: percentage of ethanol	<0.0001	<0.0001
	: solvent/power ratio	0.7131	0.0689
Interaction term		0.9045	0.3756
		0.9349	0.1071
		0.0010	0.0323
Quadratic term		0.4359	0.0011
		0.0010	0.0003
		0.0054	0.0208

values less than 0.05 indicate that the effects of factors are significantly different from zero at the 95.0%.